瑞舒伐他汀对高脂饲养大鼠心肌脂联素及其受体表达的影响
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Effects of Rosuvastatin on Cardiac Expression of Adiponectin and Its Receptors in High-fat-fed Rats
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    目的 探讨瑞舒伐他汀对高脂饲养大鼠心肌脂联素及其受体mRNA和蛋白表达的影响。方法 8周龄Wistar大鼠48只,随机分为对照组、高脂饲养组、高脂饲养+瑞舒伐他汀组,20周后,全自动生化分析仪测定血清甘油三酯(TG)、总胆固醇(TC)、低密度脂蛋白胆固醇(LDLC)、高密度脂蛋白胆固醇(HDLC)、血糖,ELISA测定血清脂联素,RT-qPCR和 Western blot测定心肌组织脂联素及其受体 mRNA和蛋白的表达。结果 与对照组相比,高脂饲养组大鼠血清TG、TC、LDLC、血糖、脂联素升高(P<0.01),HDLC降低(P<0.01)。与高脂饲养组相比,高脂饲养+瑞舒伐他汀组血清TG、TC、LDLC、脂联素降低(P<0.05), HDLC升高(P<0.01),血糖无明显差异(P>0.05)。与对照组相比,高脂饲养组心肌脂联素mRNA和蛋白表达升高(P<0.01),心肌脂联素受体mRNA和蛋白表达降低(P<0.05)。与高脂饲养组相比,高脂饲养+瑞舒伐他汀组心肌脂联素mRNA和蛋白表达降低(P<0.05),心肌脂联素受体1 mRNA和蛋白表达升高(P<0.05),心肌脂联素受体2 mRNA和蛋白表达无明显差异(P>0.05)。结论 高脂饲养大鼠过程中,可出现血清脂联素升高,心肌脂联素mRNA和蛋白表达上调,心肌脂联素受体mRNA和蛋白表达下调,瑞舒伐他汀可以部分逆转这些作用。

    Abstract:

    Aim To investigate the effects of rosuvastatin on cardiac expression of adiponectin and its receptors in high-fat-fed rats. Methods Male Wistar rats (n=48) were randomly divided into three groups: control group (NC), high fat fed group (HF), high fat fed+rosuvastatin group (HF+RS). After 20 weeks, serum concentrations of triglyceride (TG), total cholesterol (TC), low density lipoprotein cholesterin (LDLC), high density lipoprotein cholesterol (HDLC) and blood glucose (BG) were tested by automatic biochemical analyzer, serum level of adiponectin was measured by ELISA, the expression of adiponectin and its receptors in the myocardium was determined by RT-qPCR and Western blot. Results Compared with NC group, HF group showed increased serum TG, TC, LDLC, BG and adiponectin (P<0.01), and decreased serum HDLC (P<0.01). Compared with HF group, HF+RS group showed decreased serum TG, TC, LDLC and adiponectin (P<0.05), increased serum HDLC (P<0.01), and with no obvious difference in serum BG (P>0.05). Compared with NC group, myocardial adiponectin expression were higher (P<0.01), myocardial adiponectin receptors expression were lower (P<0.05) in HF group. Compared with HF group, myocardial adiponectin expression were downregulated (P<0.05), myocardial adiponectin receptor 1 expression were upregulated in HF+RS group (P<0.05), while there was no obvious difference in myocardial adiponectin receptor 2 expression between the two groups (P>0.05). Conclusions There were elevation of serum adiponectin level and myocardial adiponectin expression, and reduction of myocardial adiponectin receptors expression in the process of feeding rats with high fat food. Rosuvastatin treatment could partly reverse these effects.

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杨 丽,田建会,王霞霞,马 蕾,王梦娟,杨 靖.瑞舒伐他汀对高脂饲养大鼠心肌脂联素及其受体表达的影响[J].中国动脉硬化杂志,2014,22(03):252~256.

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  • 收稿日期:2013-11-12
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